Taylor Swift, left, and Nicki Minaj went at it on Twitter after the pop singer took offense at the rapper's comments about her exclusion from video of the year nominees at the MTV Video Music Awards. And as if it that wasn't enough, Katy Perry seemed to weigh in as well.

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Iggy Azalea, left, and Britney Spears were chummy at the Billboard Music Awards in May, but now they may be at odds over the lack of success of their single "Pretty Girls."

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Playboy founder Hugh Hefner's former girlfriends Kendra Wilkinson-Baskett, left, and Holly Madison are arguing over Madison's portrayal of their former life at the Playboy Mansion in her new book.

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Rappers Dwayne "Lil Wayne" Carter, left, and Bryan "Birdman" Williams were once the father and son of Cash Money Records. Now the pair are in a $51 million dollar court battle over Carter's contract and the delayed release of "Tha Carter V."

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Mariah Carey and Nicki Minaj shared the judges' table during season 12 of "American Idol," and they bickered all season. "Let's just say I don't think they had any intentions for us to have a good experience doing that show," Carey reflected in a recent interview on Australian radio. "Pitting two females against each other wasn't cool."

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TVLine reported that Julianna Margulies, left, and Archie Panjabi did not actually film their final scene together on the "Good Wife." According to the site, body doubles and special effects were used to create the scene. There have long been rumors of tension between the pair on the set of the hit CBS drama.

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When it comes to feuds, you could probably pair Azealia Banks up with any number of people -- particularly Iggy Azalea, with whom she's exchanged many angry tweets. But in the April issue of Playboy, Banks added some targets, saying Pharrell and Kendrick Lamar engage in "nonthreatening black man sh*t" and adding that she hates "everything" about the United States.

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It seems that not everyone loves Jennifer Lawrence, left. In talking about some of her fellow actresses to V Magazine, Chloe Sevigny said, "Jennifer Lawrence, I find annoying. Too crass." Wow.

Onetime friends Denise Richards and Heather Locklear hit a major impasse after the former started dating the latter's ex, Bon Jovi's Richie Sambora. In interviews, Richards denied that she and Locklear were still friends at the time she began seeing Sambora.

It's a case of he said/she said/he said. Eminem set it off after he claimed to have had a torrid dating relationship with singer Mariah Carey, who denied it. Her husband, Nick Cannon, even offered to defend her honor by meeting the rapper in the ring.

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Oprah Winfrey was reportedly annoyed by David Letterman's constant joking references to her name when he hosted the Academy Awards in 1995. The late-night talk-show host told "The Daily Show's" Jon Stewart he had also once played a practical joke on Winfrey, convincing a waiter that she had agreed to pick up his tab. They have since made peace.

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Tom Cruise got on Brooke Shields' bad side by decrying her use of medication to treat postpartum depression. Shields responded with an op-ed in The New York Times, and Cruise later apologized for his remarks.

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Paris Hilton and Nicole Richie helped to coin the term "frenemies" after their very public bust-up in 2004. The former "Simple Life" co-stars went on to make up two years later.

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It appears that rapper Lil' Kim has not taken too kindly to what she views as Nicki Minaj's lack of respect and similar style with the colored wigs and sexually explicit lyrics. The pair have traded insults all over the media.

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Kanye West and Taylor Swift had one of the greatest celeb feuds of all time. The rapper famously grabbed the singer's mic at the 2009 MTV Video Music Awards. He later apologized, and she seemed to accept his apology via her song "Innocent."

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Model Amber Rose served it up to reality Khloe Kardashian on Twitter after Kardashian criticized her for talking about Kardashian's younger sister Kylie Jenner during an interview. Let's just say the word "hoe" was used.

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Abigail Breslin's big music debut did notgo over well with fans of Australian boy band 5 Seconds of Summer. In a song called "You Suck," the actress sings about the wrongdoings of unnamed prior loves; judging from some of the lyrics, 5SOS fans inferred that Breslin was taking aim at 5SOS singer Michael Clifford. They retaliated with a series of mean tweets under the hashtag #AbigailYouTried.

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In a recent interview with the Telegraph, Bette Midler criticized Ariana Grande's pop act as being needlessly sexy, calling it "terrible," "ridiculous" and "silly." When Grande heard about it, she called Midler out for being hypocritical. It wasn't long before Midler bowed out of the fight, tweeting, "all I can say is, 'Spoken like a reformed old whore! She does have a beautiful voice, on a couch or off.' "

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Lorde is not the kind of girl to stand idly by while someone picks on her friends. When DJ/producer Diplo teased Taylor Swift about her backside, Lorde jumped in with a fiery comeback. If they wind up at a music show together, things may get awkward.

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When Chris Brown learned what "The Real" co-hosts Adrienne Bailon and Tamar Braxton had to say about his relationship with Karrueche Tran, the singer defended his (then) girlfriend in a social media tirade. Among other things, Brown criticized Bailon as being an "ole trout mouth" and labeled Braxton as "Muppet Face."

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Former Secretary of State Madeleine Albright did not let Conan O'Brien get away with tweeting that he was going as "Slutty Madeleine Albright" for Halloween. She came right back at him with a hilarious response.

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Add Black Keys drummer Patrick Carney, right, to the list of musicians unimpressed with U2's attempt to give away an album on iTunes. Carney told The Seattle Times that he believes the band, fronted by Bono, "devalued their music completely" by offering the new release "Songs of Innocence" as a free download to iTunes subscribers.

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Sharon Osbourne is also not a fan of U2's giveaway. The TV personality took the group and Bono to task in September 2014 for releasing a free album via iTunes. She called their music "mediocre" and the group "middle-age political groupies."

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Snoop Dogg and Iggy Azalea also battled in a very public way. After Snoop made fun of Iggy's appearance on social media, the "Fancy" rapper responded with confusion, saying that she didn't understand why Snoop would be "supportive to my face but another way on your Instagram."

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It seems Martha Stewart isn't the biggest fan of Gwyneth Paltrow's lifestyle brand, GOOP, but Paltrow isn't bothered. After Stewart commented in an interview that Paltrow "just needs to be quiet" and not try "to be Martha Stewart," Paltrow took it as a compliment. "I'm so psyched that she sees us as competition," the actress said in October.

A recent TMZ video appeared to show actor Orlando Bloom and pop singer Justin Bieber having an altercation at a bar in Ibiza, Spain, but neither star has commented on the report. That hasn't stopped the world from imagining that these two had a heated throwdown.

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Kim Kardashian didn't mention actress Adrienne Bailon by name when she went on a Twitter rant last July, but it was pretty obvious whom she was speaking of. Bailon, who used to date Kim's brother Rob, spoke ill of the past relationship in a magazine interview. Kim then tweeted, "Funny how she says being with a Kardashian hurt her career yet the only reason she has this article is bc she is talking about a Kardashian ... So sad when people try to kick my brother when he is down #FamilyForever."

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Freddie Prinze Jr. worked with Kiefer Sutherland on the Fox series "24" in 2010 and said his experience with the actor was so horrible, he wanted to quit acting. Yet while Prinze called Sutherland "the most unprofessional dude in the world," Sutherland responded via his rep that he enjoyed working with his former co-star.

Charlie Sheen is also unhappy with Rihanna. Sheen tweeted that the singer declined to meet him and his gal pal when they all landed at the same restaurant in May. The actor went on a bit of a Twitter rant, saying, "it was a pleasure NOT meeting you." We think Rihanna might have responded when she tweeted, "If that old queen don't get ha diapers out of a bunch..."

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Katy Perry got a tongue-lashing from Miley Cyrus after she dissed the younger singer's hygiene on an Australian morning show last year. The two seem to have patched things up: the two joked around at the 2015 Grammys.

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Story highlights

Drake lashed out at Rolling Stone on Twitter

The rapper was upset that his cover had been replaced with Philip Seymour Hoffman

He was also upset over a quote he said wasn't right

He later apologized for his reaction

Everyone has tough days at the office, but when Drake has one it goes viral.

According to Drake's tweeted comments -- some of which he later deleted -- not only was he supposed to have the Rolling Stone cover, but the publication printed a quote that he called incorrect.

"I never commented on (Kanye West's) 'Yeezus' for my interview portion of Rolling Stone," Drake initially posted on Thursday. "They also took my cover from me last minute and ran the issue. I'm disgusted with that. RIP to Phillip Seymour Hoffman. All respect due. But the press is evil. I'm done doing interviews for magazines. I just want to give my music to the people. That's the only way my message gets across accurately."

Actually, it's not the only way. By the early morning hours of Friday, Drake turned to his website to give more clarity on his rage against Rolling Stone, and to apologize to the Hoffman family and those who were offended by his comments.

"These days are the worst ones," Drake said in a lengthy statement. "After dwelling on it for a few hours or days you will come to the conclusion that you brought it on yourself almost every time. So here I am having that moment."

Thursday, which also happened to be the fifth anniversary of his landmark "So Far Gone" mixtape, was "an extremely emotional day," Drake explained. "I completely support and agree with Rolling Stone replacing me on the cover with the legendary Phillip Seymour Hoffman. He is one of the most incredible actors of our time and a man that deserves to be immortalized by this publication. My frustration stemmed from the way it was executed. The circumstances at hand are completely justifiable (on the magazine's behalf), but I was not able to salvage my story or my photos and that was devastating."

Drake goes on to say that the issue was printed without him having the option to be in it or not, and that, had he been able to, he would've "waited until it was my time because I understand the magnitude of the cover they chose. But I just wasn't given that option and that made me feel violated."

In the end, the 27-year-old said he wanted to apologize "to anybody who took my initial comments out of context, because in no way would I ever want to offend the Hoffman family or see myself as bigger than that moment. I am still the same person. ... I respect Rolling Stone for being willing to give a kid from Toronto a shot at the cover. I guess this is a day to learn and grow."